How does the Event Loop mechanism interact with coroutines in the asyncio library in Python?

In the Python asyncio library, the Event Loop mechanism is responsible for managing the execution of coroutines — special functions that can suspend their execution, allowing other tasks to run concurrently in a single thread.

The Event Loop constantly checks which coroutines are ready to run (for example, when an I/O operation is complete) and resumes their execution. When a coroutine encounters the await keyword, it suspends, freeing the Event Loop to run other coroutines. Once the awaited event occurs (for example, data is read from the network), the Event Loop resumes the execution of the corresponding coroutine.

Example:

import asyncio

async def say_hello():
    print('Hello')
    await asyncio.sleep(1)  # suspends the coroutine for 1 second
    print('World')

asyncio.run(say_hello())

Here, the Event Loop manages the pause caused by asyncio.sleep, allowing other tasks to run during this time.